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Se t. 19"

p R. we. JOHNSTONE CORE SUPPORTING MEANS Fil d April 16, 1925 2 Sheets-Sheet l I NV EN TOR.

A TTORNE Y.

1,642,680 1927 R. M c. JOHNSTONE CORE SUPPORTING MEANS Fil i1 16. 1925 2 Sheets-Sheet 2 1 NV EN TOR.

ATTORNEY.

Patented Sept. 20, 1927.

UNITED STATES 1,642,680 PATENT OFFICE.

ROBERT MGG. JOHNSTONE, OF ROSELLE PARK, NEW JEBSEY,-ASSIGNOR TO CAMERON MACHINE COMPANY, OF BROOKLYN, NEW YORK, A CORPORATION OF NEW YORK.

GORE-SUPPORTING MEANS.

Original application filed May 2,

This invention relates to core-supporting means and has for its main object and featurean expansible mandrel that will engage a core member and hold in undisturbed relation a group of'individual cores produced from said core member.

This application is a division in part of one filed May 2, 1923, Ser. No. 636,133.

In the accompanying drawings the invention is disclosed in several concrete and preferred forms in which:

Fig. 1 is a view, partly in elevation an partly in section, of one end of a winding shaft with cores and coils of flexible material in position.

Fig. 2 is a View, partly in elevation and "partly in section, of a winding shaft with a tube or core member in position before 1t is divided into sections or individual cores. 0

Fig. 3 is a perspective view of the winding shaft and core-cutting elements.

Figs. 4 to 8 inclusive show a modified form of the invention.

v Fig. 4 is a view, partly in elevation and partly in section, of a winding shaft with cores and coils of flexible material in position and showing the clamping or gripping member in active position.

Fig. 5 is a transverse sectional view on the line 5-5 of Fig. 4, showing the clamping o1 gripping member in active position.

Fig. 6 is a view similar to Fig. 5, with the clamping or gripping member in inactive position.

Fig. 7 is a view somewhat similar to Fig. 4 but showing the core uncut and devoid of coils of flexible material and the clamping member in inactive position.

Fig. 8 is a transverse sectional view on the line 88 of Fig. 7.

Reference character 1 denotes a winding shaft having a longitudinal groove 2 in which clamping member 3 is seated. Said clamping member is slidable longitudinally in the groove of the shaft and is also capable of outward movement. Any suitable means may be employed for this purpose, but preferably member 3 is provided with elongated, oblique cam slots 4 through which project pins 5 fixed in the shaft.' It will be understood that by moving member 3 lengthwise the cam action between the pins and slots is such that member 3 moves outwardl beyond the outer surface of the shaft so t at, if a 1923, Serial No. 636,133. Divided in part and this application filed April 16, 1925. Serial No. 23,706.

rotating member 8 in the other direction,

gravity will restore the clamping member to its original position. Shaft 1 is further provided with circumferential grooves 10 that register with core-cutting elements 11 of the core-cutting machine, and member 3 is provided with cut-awa portions 12 that come into alinement witl i grooves 10 when said member 3 occupies its protruding position so that clearance for cutting elements 11 may be obtained.

Normally, member 3 will occupy a position below the outer surface of the shaft. A relatively long cardboard tube 6 is then mounted on the shaft and member 3 is caused to clamp saidtube by being moved into its expanded position. The shaft is now inserted in a tube-cutting machine. Cutters 11 ar spaced to match the slitting elements of a slitting and winding machine and it will be understood that when shaft 1 and tube 6 are pressed against cutters 11 and the latter are rotated a group of cores will be produced that will be retained in undisturbed position on the shaft. The shaft may then be removed from the cutting machine and inserted into a slitting and winding machine and coils of flexible material wound on the cores in proper alinement. After the winding 0 eration is com leted, the shaft is remove from the mac inc and member 3 is withdrawn from engagement with the cores ing means, such as guide 16, are .employed to hold the rock member in position in the shaft. It will be understood that a soft core 6 is slid on the shaft while the rock member occupies the position shown in Fig. 8, that is,

coils of flexiblematerial are wound on the" individual cores. During the winding action the direction of rotation is as indicated by the arrow in Fig. 5 and the resistance pull of the unwound web is in the'opposite direction; consequently, the parts will retain b their position. When the winding action is completed the shaft is removed from the winder and the shaft is turned to the right in Fig. 5 while the coils and cores are held stationary. This will cause the parts to assume the position shown in Fig. 6 where the coils and cores are released.

I claim: 1. Core-supporting means comprising: a shaft having circumferential grooves in its 1 outer surface, and 'a core-clamping member mounted in said shaft to move lengthwise and outwardly above the surface of the shaft, said member having cut-away portions that register with the circumferential grooves of the shaft when the member protrudes from the shaft.

2. Core-supporting means comprising: a shaft having circumferential grooves to provide clearance for exterior cutting means, and expansible devices within said shaft to enga e, intermediate the grooves, a core mem er surrounding the shaft and to hold, in undisturbed relation, a group of individual cores produced from said core mem- Signed at New York, in the borough of Brooklyn county of Kings and State of New York, this 8 day of April 1925.

ROBERT M00. J OHNSTONE. 

